// From: http://www.stroustrup.com/C++11FAQ.html#11// In C++11 the macro __cplusplus will be set to a value that differs from (is greater than)// the current 199711L.#if( __cplusplus > 199711L )#define NULL nullptr#else#define NULL 0#endifint main( )
{
int *Pointer_( NULL ); // 0 if C++11 is not enabled; "nullptr" if it is enabled.
}